Respuesta :
Elements in a group have similar properties.
strontium, magnesium, calcium, beryllium are the answers because they belong to same group (2nd group).
strontium, magnesium, calcium, beryllium are the answers because they belong to same group (2nd group).
Answer:
strontium, magnesium, calcium, beryllium
Explanation:
these all belong to the same group!